A diesel generator (DG) was initially operating at 80 percent of rated load supplying an isolated electrical bus when a malfunction caused the DG output breaker to trip.
The breakers for all of the bus loads–all of which are large motors–remained closed, preparing the motors to restart upon restoration of power to the bus.
The DG output breaker has been repaired.
With all of the bus load breakers still closed, which one of the following will occur when the DG output breaker is closed to reenergize the bus?
A. The DG will become lightly loaded.
B. The DG will return directly to its initial load.
C. The DG will experience slight overload conditions.
D. The DG will experience severe overload conditions.
Show Answer
Answer: D
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